Page({
  data: {
    inputValue:'',
    PayBtn:''
  },
  inputKeyup(e){
    let that = this,value = wx.getElem(e,'',true);
    that.setData({
      inputValue: value == '' ? '' : value,
      PayBtn: value == '' ? '' :'Recharge'
    })
  },
  Recharge(){
    console.log(1)
  }
})